In order to implement an Ultimate Buy and AIM strategy you would need a substantial amount of money, though, as each individual systems needs enough money put in investments as well as your cash stash.
On the subject of ETF's: isn't it hard to select a proper (i.e. volatile) ETF? I back-tested a couple of iShares funds and the number of trading opportunities is way smaller than with individual high beta stocks.
On a related note: do you think foreign currency stocks reinforce or reduce volatility? Or should that be determined on a case by case basis?